1. Have you ever been resting quietly and suddenly heard someone tell you that you had obviously been sleeping because you were snoring? Did you believe them, or were you certain that you were really awake? Do you think it was likely that you had actually entered stage 1 sleep?

2. What is accomplished by dreaming? Some researchers believe that the subject matter of a dream does not matter; it is the REM sleep itself that is important. Others believe that the subject matter does count. Some researchers believe that if we remember a dream, then the dream failed to accomplish all of its functions; others say that remembering dreams is useful because it can give us some insights into our problems. What do you think of these controversies?